Product Overview
The expansion device is composed of expansion seat, sealing ring, expansion pipe, etc., which can be expanded and retracted within a certain range to reach the connection length required on site, and
also can overcome the offset caused by different shaft butt joint of pipeline within a certain angle
range, which can greatly facilitate the installation and disassembly of valve pipeline.
Structural Characteristics
- The valve body adopts full channel and streamline design, with small fluid resistance and large flow rate.
- The joint of body, cover and piston rod is double sealed by sealing gasket and sealing ring without leakage.
- Double guide of valve body, piston cylinder and piston ensures stable and reliable movement.
- All stainless steel piston cylinder, integral casting piston and NBR sealing ring. Perfect combination greatly prolongs service life.
- The detachable valve seat with advanced technology has ingenious structure, novel conception and convenient maintenance and replacement.
- For the piston cylinder with guide hole, properly increase the resistance to make the piston movement more stable.
Execution Standard
Flange standard: GB/T17241.6\API 598 GB/T 9113
Test standard: GB/T13927
Performance Parameter
Main materials: gray cast iron, ductile iron, carbon steel
Nominal diameter: dn60 ~ 3600mm
Nominal pressure: pn0.6 ~ 1.0MPa
Applicable temperature: < 80℃
Applicable medium: water and medium with physical and chemical properties similar to water
Product Dimensions
